Statistics for occurrence #1 of “Ohio River” in chapter 11 of Edward L. Pierce, Memoir and letters of Charles Sumner: volume 3:

...ere he renewed with Mr. and Mrs. William Preston the pleasant relations he had begun with them in Washington. He was taken by Mr. Preston to drive on the Indiana as well as the Kentucky side of the Ohio River . He went from Louisville to the Mammoth Cave and to Nashville,—most, if not all, of the way by stage-coach. The hotel accommodations on this part of the route were very primitive. He was o...
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